Sylvania



L. A H C I R A M Aw & D 0 0 G R W M W BLOWING ENGINE Patented Apr. 28,1896.

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ANDREW B GRMMM PNOTWLITHQWISHINF-IDKQC.

NITED STATES PATENT Orricn.4 Y

VILLIAM E. GOOD AND ARTHUR MARICIIAL, OF PHILADELPHIA, PENN-` SYLVANIA,ASSIGNORS TO THE SOUTI-IVARK FOUNDRY AND MACHINE COMPANY, OF SAME PLACE.

BLowlNc-ENciNE.

SPECIFICATION forming part of Letters Patent No. 558,944, dated April28, 1896.

Application filed May 27, 1893. Serial No. l1:75,(572. (No model.)

To all whom it may con/cern:

Be it known that We, WILLIAM E. GOOD, a citizen of the United States,and ARTHUR MARIOHAL, a subject of the King of Belgium, both residing inthe city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain ,new and useful Improvement inBlowing-Engines or Compressors, of which the following is a true andexact description, reference being had to the accompanying drawing,which forms a part of the specification.

Our invention relates to the construction of blowing-engines orcompressors for air or gas, and has for its object to provide improvedvalve-actuating mechanism for controlling and adjusting the movements ofthe valves through which the air is admitted to and delivered from thetub; and our invention consists in the combination, with the tub-valves,of a positively-actuated link valve-motion and of automatic means foradjusting the said valve-motion to alter the time of opening of thedeliveryvalves With respect to the movement of the compressing-piston..

The nature of our improvements Will be best understood as described inconnection with the drawing in which they are illustrated and whichrepresents in elevation the tub of a blowing-engine, (shown inlongitudinal section,) which at the upper end passes through one of thedelivery-valves, the drawing also showing the link valve-motion andautomatic adjusting device, but omitting the other parts of the engineas not being necessary to a full understanding of our present invention.

C indicates the compressing cylinder or tub, the heads thereof beingindicated at C C.

D is the piston-rod, and D the piston working in the tub.

E2 indicates the shaft of the blowing-engine; IV W, branches of thereceiver inclosing the delivery-valves at each end of the tub.

I indicates the delivery-valve; I', the delivery-valve spindle.` j

The admission-valves arey not shown, but may be of any ordinaryconstruction, I-I indicating the valve-spindles to which they areattached. The spindles H of the admissionvalves are connected by linksH2 with the arms J of levers J J2, pivoted at J, and with z the arms J2,to which is connected the actuconnected through a rod O and lever N N',`

pivoted at N2, With the short arm Q of a link Q, which will behereinafter described. The spindles I of the delivery-valves areconnected by rods I2 with the arms K of the levers K K2, each of whichis pivoted at K and connected together with actuating mechanism bylneans of the rod M. The rod M is connected at a point q2 with a longarm Q2 ofY the link Q, which link, it will be seen, is supported bymeans of an eccentric-strap upon an eccentric P, secured in turn to theshaft E2. The link is supported, in addition, by means of rods S uponthe upper ends of pivoted arms R, the lower ends of which arms aresupported upon a standard or standards a. The point of attachment q bywhich the rod O is connected With the link Q is so close to theeccentric that no material variation in the motion of the rod and thevalves connected with it is effected by changing the position of thepivoted arms R; but such a change in the position of these supportingarms materially affects the curve through which the point q2 travels, towhich point the rod M is attached, and by adjusting the angular positionof the arms R the motion of the delivery-valves can be `changed at willso as to make them open sooner or later.

To the extent above described the device shown forms the subject-matterof an individual application by Villiam E. Good filed herewith andbearing the serial number 474,518. Our present invention consists incombining with the arms R automatic adjusting mechanism by which theirangular position will be governed and changed as the pressure in thereceiver W increases or diminishes. We effect this by providing acylinder U and a piston V moving therein and connected by a rod T withthe arms R. "With the piston V we also connect, as by means ofpiston-rod V, a spring or equivalent mechanism actingV constantly todraw down the IOC arms R toward their' normal position when there islittle or no pressure in the' receiver. l/Ve also connect with cylinderU a pipe or conduit w, connected at its other end with the receiver, thepressure entering the cylinder through this conduit acting in theopposite direction to that in which the spring z acts, the arrangementbeing such that as the pressure increases in the receiver the piston Vis gradually pushed outward in the cylinderV, Overcoming the resistanceof the spring ,e and raising the arms R, with the effect of changing thepoint at which the delivery-valves will open with respect to themovement of the piston D. This point should be that at which thepressure in the tub in front of the advancing piston and the pressure inthe receiver is substantially equal. Consequently as the pressure in thereceiver increases the time of openin g for the delivery-valve should bedelayed.

Having now described our invention7 what we claim as new, and desire tosecure by Letters Patent, is Y ln a blowing engine or compressor thecombin ation of the tub, a discharge-valve, a link valve-motion, meansfor communicating 1notion from said valvennotion to the valve, acylinder as U, a piston V moving in said cyliny der, and connected tomechanism for varying 3o the motion of the valve-1noti0n mechanism,

a conduit w leading from the receiver of the engine to the cylinder anda constantly-acting force as spring z arranged to act on piston V in theopposite direction to that in 3 5 which the air from the receiver movesit.

W. E. GOOD. A. MARICHAL. Vitnesses:

JAs. H. MALONEY, J. D. HAGENBUCH.

